/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.cadoc.cqe;

import java.util.Map;

import org.cadoc.cqe.logic.Pattern;
import org.cadoc.cqe.logic.Variable;
import org.cadoc.parser.JavaStatementParser;
import org.cadoc.parser.StatementParser;

public class CodeQueryEngineImpl implements CodeQueryEngine {

	private PatternContext context;
	private StatementParserHandler handler;
	private KnowledgeReceiver knowdledgeBase;
	private StatementParser parser;
	private PatternAnalyzer analyzer;
	
	CodeQueryEngineImpl(PatternContext context){
		this.context = context;
		handler = new StatementParserHandler();
		knowdledgeBase = new KnowledgeBase();
		handler.setCodeKnowledge(knowdledgeBase);
		parser = new JavaStatementParser(handler);
		analyzer = new PatternAnalyzerImpl();
		
		this.refreshKnowledgeBase();
	}
	
	public PatternResultSet evaluate(Pattern query) {
		Map<? extends Variable, Integer> factVectors = analyzer.analyze(query);
		factVectors.size();
		return null;
	}

	public void refreshKnowledgeBase() {
		parser.parse(context);
	}
	

}
